CN203103967U - Static synchronous reactive power compensator - Google Patents
Static synchronous reactive power compensator Download PDFInfo
- Publication number
- CN203103967U CN203103967U CN 201220737743 CN201220737743U CN203103967U CN 203103967 U CN203103967 U CN 203103967U CN 201220737743 CN201220737743 CN 201220737743 CN 201220737743 U CN201220737743 U CN 201220737743U CN 203103967 U CN203103967 U CN 203103967U
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- CN
- China
- Prior art keywords
- static synchronous
- power semiconductor
- synchronous reactive
- charging resistor
- vacuum contactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model relates to a static synchronous reactive power compensator, which comprises a vacuum contactor or breaker, a charging resistor, a connecting reactor, a power semiconductor switch and a dc energy storing capacitor. The power semiconductor switch is connected with the dc energy storing capacitor in parallel, the vacuum contactor or breaker is connected with the charging resistor in parallel, and then the parallel-connected power semiconductor witch and dc energy storing capacitor and the parallel-connected vacuum contactor or breaker and the charging resistor are series connected with the connecting reactor in a bus, wherein a hall sensor is used in a current detection link of the static synchronous reactive power compensator, and the dc energy storing capacitor is a non-polarity safe mode capacitor. The static synchronous reactive power compensator also comprises a control system, which is a real-time multitask operating system, supports RS485, Ethernet and other hardware interface manners, and integrates a plurality of communication protocols.
Description
Technical field
The utility model relates to the stable and reactive power compensator of voltage among a kind of flexible AC transmission technology FACTS (FlexibleAC TransmissionSystem), is specially a kind of static synchronous reactive compensator.
Background technology
Static synchronous reactive compensator (SVG) is the stable and reactive power compensator of the voltage among the flexible AC transmission technology FACTS (Flexible AC TransmissionSystem), also can be used for transmission system trend control it representing the new developing direction of present stage power system reactive power compensation technology.SVG can in extremely rapid succession provide capacitive and lagging reactive power, realizes suitable voltage and Reactive Power Control, ensures power system stability, efficient, high-quality ground operation.
Static synchronous reactive compensator is widely used in petrochemical industry, wind energy turbine set, solar energy electric field, metallurgy, electric power, coal, electric railway and other have the industrial circle of impact load and large capacity motor, can be energy-saving and cost-reducing, improve electric network security and stability, improve power factor of electric network, improve aspect such as the quality of power supply and play a significant role.But there is following defective in traditional dynamic reactive compensation device:
1, the actual motion electric current of employing current transformer harvester, monitoring SVG current status SVG adopts the technology of PWM and multipleization, and its switching frequency is very high in its running, produces the interference signal of high frequency in the running.Can cause the core sataration of current transformer in the current transformer by high-frequency signal, influence its certainty of measurement, also influence the safe operation of SVG system.
2, dc energy storage electric capacity uses aluminium electrolytic capacitor.Aluminium electrolytic capacitor is that two electrodes are placed electrolyte.After operation a period of time, aluminium electroloysis electrolyte is withered, and capacitance reduces, and influence guarantees the voltage stabilizing function of DC side, causes SVG normally not move.
Summary of the invention
In view of this, in order to address the above problem, basis is novel to provide a kind of reasonable in design, the static synchronous reactive compensator of perfect in shape and function.
For achieving the above object, the utility model adopts following technical scheme:
A kind of static synchronous reactive compensator, comprise vacuum contactor or circuit breaker, charging resistor, connection reactor, power semiconductor switches and dc energy storage electric capacity, described power semiconductor switches has control system, with the parallel connection of described dc energy storage electric capacity, described vacuum contactor or circuit breaker and described charging resistor parallel connection, more than receive on the bus after the series connection of these devices and described power semiconductor switches, the current detecting link of described static synchronous reactive compensator is used Hall element.
Preferably, described dc energy storage electric capacity adopts nonpolarity safe mode electric capacity.
Preferably, described control system adopts real-time multi-task operating system.
Preferably, described control system is supported RS485, hardware interface modes such as Ethernet, integrated multiple communication protocol.
This novel beneficial effect is:
1) the current detecting link is used Hall element, and this transducer can only detect the power frequency component in the system, has increased the accuracy of SVG to Device Testing.
2) use nonpolarity safe mode capacitor, film adopts import Stainer safety diaphragm.This capacitor degree of decay is very low very low, and capacitor useful life is more than 15 years.
3) control system adopts advanced hardware platform+Real-time Multi-task System.Each performs its own functions for a plurality of acp chips, guarantees that information fast processing, system stability are reliable, and anti-electromagnetic interference capability is strong.
Description of drawings
Fig. 1 is a main wiring diagram of the present utility model.
The charging resistor of wherein, KM---vacuum contactor or circuit breaker, R---SVG,
---SVG connects reactor, IGBT---power semiconductor switches, C---dc energy storage electric capacity to L
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
With reference to figure 1, the utility model discloses a kind of static synchronous reactive compensator, comprise that vacuum contactor or circuit breaker KM, charging resistor R, connection reactor L, power semiconductor switches IGBT have control system, with the dc energy storage capacitor C, described vacuum contactor or circuit breaker KM are that described static synchronous reactive compensator SVG puts into operation and switch out of service; Described charging resistor R, after the SVG charging finished, described charging resistor R was out of service by described vacuum contactor or circuit breaker KM short circuit; Described connection reactor L reduces the switch ripple in the SVG output current, reduces common mode disturbances, realizes the energy snubber between SVG and the electrical network; Described power semiconductor switches IGBT, the break-make by IGBT converts the direct voltage of DC side to the electrical network same frequency alternating voltage; Described dc energy storage capacitor C is used for the energy storage in the capacitor C, realizes energy and electrical network exchange by IGBT.Described power semiconductor switches IGBT and the parallel connection of described dc energy storage capacitor C, described vacuum contactor or circuit breaker KM and described charging resistor R parallel connection, more than receive on the bus after the series connection of these devices and described power semiconductor switches, it is characterized in that: the current detecting link of described static synchronous reactive compensator is used Hall element.
Described dc energy storage capacitor C adopts nonpolarity safe mode electric capacity.
Described control system adopts real-time multi-task operating system.
Described control system is supported RS485, hardware interface modes such as Ethernet, integrated multiple communication protocol.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.
Claims (2)
1. static synchronous reactive compensator, comprise vacuum contactor or circuit breaker, charging resistor, connection reactor, power semiconductor switches and dc energy storage electric capacity, described power semiconductor switches has control system, with the parallel connection of described dc energy storage electric capacity, described vacuum contactor or circuit breaker and described charging resistor parallel connection, more than receive on the bus after the series connection of these devices and described power semiconductor switches, it is characterized in that: the current detecting link of described static synchronous reactive compensator is used Hall element.
2. static synchronous reactive compensator as claimed in claim 1 is characterized in that: described dc energy storage electric capacity adopts nonpolarity safe mode electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220737743 CN203103967U (en) | 2012-12-28 | 2012-12-28 | Static synchronous reactive power compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220737743 CN203103967U (en) | 2012-12-28 | 2012-12-28 | Static synchronous reactive power compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203103967U true CN203103967U (en) | 2013-07-31 |
Family
ID=48855344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220737743 Expired - Fee Related CN203103967U (en) | 2012-12-28 | 2012-12-28 | Static synchronous reactive power compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203103967U (en) |
-
2012
- 2012-12-28 CN CN 201220737743 patent/CN203103967U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20151228 |
|
| EXPY | Termination of patent right or utility model |